Patent US3621772A successfully refreshed from Google Patents.
US3621772A
Expired / Lapsed
US
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Plate processor
Assignee: Rogers Corp
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Filing: 1969-09-04
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Granted: 1971-11-23
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Expires: 1989-09-04
Abstract
Abstract A PROCESSOR IS PRESENTED FOR LITHOGRAPHIC PLATES WHEREIN THE PLATE IS ADVANCED THROUGH A SERIES OF OPPOSED ROLLERS TO SUCCESSIVE PROCESSING STATIONS. THE DEVELOPER IS DELIVERED THROUGH A SERIES OF SPACED APART, INDIVIDUALLY SUPPLIED DISPENSING PORTS, EACH OF THE PORTS BEING FED BY A POSITIVE DISPLACEMENT PUMP, AND THE DEVELOPER IS SCRUBBED ON THE PLATE BY A UNITARY OSCILLATING SPONGE. OSCILLATION AND DEACTIVATION OF SUCCESSIVE STATION THROUGHOUT THE PROCESSOR ARE TIME-COORDINATED WITH THE PASSAGE OF THE PLATE THROUGH THE PROCESSOR.
Inventors
- 👤 Irving R Bogue
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:54
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/26; G03F7/30; G03F7/3042
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-11-22 | 1975-05-24 | 1975-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-22 | 1979-05-24 | 1979-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-22 | 1983-05-24 | 1983-11-23 | $7700.00 | Window Closed / Lapsed |